diff --git a/src/pretix/base/models/event.py b/src/pretix/base/models/event.py
index 7c11c7beac..c5cc750010 100644
--- a/src/pretix/base/models/event.py
+++ b/src/pretix/base/models/event.py
@@ -1841,6 +1841,7 @@ class EventMetaProperty(LoggedModel):
 
     class Meta:
         ordering = ("position", "name",)
+        unique_together = ('organizer', 'name')
 
     @property
     def choice_keys(self):